David or Dave Warner may refer to:

Sports

• Dave Warner (strongman) (born 1969), Northern Ireland strongman competitor
• David Bruce Warner (born 1970), South African alpine skier
• David Warner (cricketer) (born 1986), Australian cricketer

Others

• David Warner (actor) (1941–2022), British actor
• David William Warner (born 1941), former Speaker of the Ontario, Canada legislature
• Dave Warner (musician) (born 1953), Australian rock musician and author
• Dave Warner, neuroscientist and leader of the Afghanistan aid group Synergy Strike Force